If you want to learn French, is there an authoritative French exam that has been tested the most in China?

I suggest you go to France Union to study abroad. You can visit the website of France Union. Or you can find it on the website of the French Embassy in China. There are three authoritative French exams: TCF\TEF\TEFAQ\DELF.

Test scores are divided into six grades according to the order from elementary A 1 to advanced C2. This level setting is based on the same reference frame of European languages in Council of Europe.

Which one to take depends on the requirements of the place you want to go.

For example, when immigrating to Quebec, the immigration department stipulates that TEFAQ should be taken, reaching the level of B 1 or above.

However, if you apply to study or work in France, TCF is far more recognized than TEF. It's basically useless to take the TEF test.

In addition, the validity period of TCF is 2 years, and the validity period of TEF is 1 year, which is generally used for visas and the cost is relatively low.

If you want to get a professional lifelong certificate, study in France for a long time or engage in academic research, it is still recommended to take DELF (Diploma in French Studies) or DALF. Specific exam information can be found on Baidu Encyclopedia.

Foreign students with a DALF diploma can be exempted from all other French proficiency tests when applying for French universities. Generally speaking, you must have a DELF diploma to apply for the licence stage (undergraduate) of B2 public universities, and you must have a C 1 level to apply for the master's stage. TEF is a French test standard formulated by the Paris Chamber of Commerce and Industry, and it is the basis for obtaining a study visa in France. Many French schools also recognize TEF scores. DELF and DALF are French test standards formulated by the French Ministry of Education, and TEF test scores cannot replace DELF and DALF diplomas. Without these two diplomas, foreign students may be prevented from entering French institutions of higher learning, especially public universities.